#include<stdio.h>
#include<string.h>
#include<stdlib.h>

#define TSIZE 45

struct film {
    char title[TSIZE];
    int rating;
    struct film * next;
};

char * s_gets(char * st, int n);

int main() {
    struct film * head = NULL;
    struct film * current, * prev;
    char input[TSIZE];

    // gather and store information
    puts("Enter first movie title:");
    while (s_gets(input, TSIZE) != NULL && input[0] != '\0') {
        current = (struct film *) malloc(sizeof(struct film));
        if (head == NULL) {
            head = current;
        } else {
            prev->next = current;
        }
        current->next = NULL;
        strcpy(current->title, input);

        puts("Enter your rating <0-10>:");
        scanf("%d", &current->rating);
        while (getchar() != '\n') {
            continue;
        }
        puts("Enter next movie title (empty line to stop):");
        prev = current;

    }

    // show list of movies
    if (head == NULL) {
        printf("No data entered. ");
    } else {
        printf("Here is the movie list:\n");
    }
    current = head;
    while (current != NULL) {
        printf("Movie: %s Rating: %d\n",
        current->title, current->rating);
        current = current->next;
    }

    // program done. so free allocated memory
    current = head;
    while (current != NULL) {
        free(current);
        current = current->next;
    }
    printf("Bye!\n");
    return 0;
}


char * s_gets(char * st, int n) {
    char * ret_val;
    char * find;

    ret_val = fgets(st, n, stdin);
    if (ret_val) {
        find = strchr(st, '\n');    // find for newline
        if (find)                   // if the address is not NULL
            *find = '\0';           // place a null character there
        else {
            while (getchar() != '\n')
                continue;           // dispose of rest of line
        }
    }
    return ret_val;
}